Diet regulation after thyroid tumor surgery should choose liquid or semi-liquid according to the stage, and choose different foods according to the symptoms. 1. When the surgery of thyroid cancer involves the esophagus, the doctor confirms that the diet should be gradually changed from liquid to semi-liquid until it can be eaten normally and then the food should be nutritionally balanced, such as paying attention to the vitamins, microelements and protein supplementation, and reducing the intake of spicy and stimulating food. 2. During radiotherapy, attention should also be paid to the management of diet, and diet should be changed according to different performances, for example, patients with constipation should increase the food rich in dietary fiber, and patients with diarrhea should eat less gas-producing food, such as lactic acid drink, beans and other food. Since thyroid tumor has the possibility of cancer, iodine-containing foods, including kelp, seaweed, iodized salt, etc., should be taken as little as possible after surgery. After the surgery, you should pay attention to a balanced diet, try to avoid the use of fried, spicy and stimulating food, and pay attention to quit smoking and drinking.